"""
@name : main
@author : wenyao
@projectname: sanchuanglianxi
"""
#top-level
from pack02 import three
#from pack02.pk2test import tr
# print(__name__)

# import math
# import sys
# # print(sys.modules)
# print(sys.modules.keys())
# from math import sqrt
#
# print(sys.path)